Hi:
I have a small 4 node private network where each node has 2 ports, with each
port directly connected to a port on another node in such a way that a ring
topology is formed. Two of the nodes have NIC's controlled by the e1000
driver, two of the nodes have NIC's controlled by the i40e driver. The OS is
based on Linux 3.8.13.
I bridge the 2 portss on each node, and am using user space RSTP to manage the
loop.
What I am seeing is that the bridge ports on the nodes with i40e based NIC's
are not receiving BPDU's, and so all ports remain forwarding, resulting in a
loop. Using a packet capture program to monitor enet frames, it seems that the
interfaces for the i40e NIC's never see ethernet frames from its direct
connected peer destined to the 01:80:C2:00:00:00 multicast address. They do
see unicast and broadcast frames from the peer. The direct connected peer
(e1000 based nic) does see BPDU frames being sent out the i40e based NIC's.
If I move to a config having all e1000 based NIC's, everything works fine.
I'm fairly new to networking hw, so I assume I need to turn some configuration
knobs on the i40e in order to receive the BPDU's.
I am currently not doing any configuration on the i40e interfaces - just
modprob'ing i40e to load it, and then standard commands to bring up the
interface, bridge it, and assign an ip address.
Any advice would be greatly appreciated.
Mark Maule
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